My interpretation of “covfefe” was that it was a nonsense word, intentionally introduced to draw attention and bad press. In so doing, Trump reveals his game, he acts sensationally, or introduces errors on purpose, with the specific intent of spreading what he says further.
Of course, it might have the added benefit of scaring the enemy (what the fuck did he mean by this?) or it could be genuine comms. But the context of the quote and subsequent response makes the most sense to me.
As far as what is visible, we have not seen many “wins” on this side of the veil (although I’m sure there are more in the fog of war). But undoubtedly, Trump’s most obvious success (other than perhaps survival, and reelection) is the absolute destruction of the MSM, who have been defanged and left ineffectual. Covid has also greatly diminished the power of “health experts” and “academia”.